Time switches or other control method that can automatically turn off and on heaters and pumps according to a preset schedule shall be installed on all heaters and pumps. Heaters, pumps and motors that have built in timers shall be deemed in compliance with this requirement.
- Where public health standards require 24-hour pump operation.
- Where pumps are required to operate solar- and waste-heat-recovery pool heating systems.
- Where pumps are powered exclusively from on-site renewable generation.
Heated swimming pools and inground permanently installed spas shall be equipped with a vapor-retardant cover on or at the water surface or a liquid cover or other means proven to reduce heat loss.